Mop-up for parallel degree-ectomy.

Tom Lane <tgl@sss.pgh.pa.us>

Commit: e4158319f34ceb2c760761dc93d262513235c344
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2016-06-09T15:16:26Z
Releases: 9.6.0
Mop-up for parallel degree-ectomy.

Fix a couple of overlooked uses of "degree" terminology.  Make the parallel
worker count selection logic in create_plain_partial_paths more robust (in
particular, it failed with max_parallel_workers_per_gather set to zero).

Files